Forgo valves and drop 11lbs as you convert our Valvetronic Exhaust into a valveless Competition Exhaust for the lightest and most aggressive system.
Unleash the full roar of the 3.8L GT4 with our Competition Conversion Kit. We've had numerous owners of our Valvetronic Exhaust system ask for a valve delete to shed weight - for those who like it loud the valves are not necessary. The CCK easily bolts in place using existing hardware and is reversible at any time.
Features:
Fits all 2015-2016 Porsche 981 Cayman GT4 / 981 Boxster Spyder vehicles equipped with a Fabspeed Motorsport Valvetronic Exhaust System. Not compatible with the factory/OEM exhaust
2.5" pipes made in house at Fabspeed from T304L stainless steel
CAT-BACK emissions legals muffler bypass pipes.Â
Weighs 11 lbs less than the valvetronic portion of the Fabspeed Motorsport Valvetronic Exhaust System
Simple DIY bolt-on installation no cutting or welding required (reuse Fabspeed Accuseal clamps with existing exhaust)
Direct replacement for the valved section of the Fabspeed Motorsport Valvetronic Exhaust System - easy to convert back at any time
DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product contains a High-Flow Sport Catalytic Converter solely intended for track and race cars as it is NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
The AutoHouse Advantage: Global sourcing power paired with specialized expertise. We utilize an expansive supply network of over 600,000 SKUs to deliver world-class components with an enthusiast’s precision.
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We are committed to providing the best value. If you find a lower advertised price from a verified vendor, we will match it. Shop with confidence knowing you’re getting the industry's lowest price.
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We reward enthusiasts who trust us with their major projects. Use these tiered codes at checkout to apply instant savings to your order:
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• AH180 — $180 OFF $3000+ | • AH400 — $400 OFF $6000+
• AH630 — $630 OFF $9000+
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Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
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Leveraging our massive supply chain, we secure hard-to-find components that other shops can't access. Whether it's a standard upgrade or a custom exotic application, we have the network to get it to your door.
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Building something big? If you’re planning a full overhaul or need a custom quote, reach out to our team via our Contact Page.
Precision Support: Whether you are dialing in a daily driver or sourcing components for a high-performance exotic, our team is here to ensure your project stays on track. Use the channels below for sales, technical assistance, or order updates.
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For sales inquiries, help applying Project Incentives, or immediate assistance with a new order: (828) 588-5888 Monday – Friday | 9am – 5pm EST
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At AutoHouse Supply, we are enthusiasts first. Our goal is to provide a seamless logistical experience so you can focus on your build. Please see our standard guidelines below.
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We offer FREE Ground Shipping within the 48 contiguous United States. Most in-stock orders process within 48 hours. For your security, high-value performance parts require a signature upon delivery to ensure they reach you safely.
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Please inspect your order immediately. Damage must be reported within 48 hours. For freight/LTL items, if you cannot inspect the contents immediately, please write "Subject to Inspection" on the delivery receipt before signing.
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Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
Exclusions:
To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.
Need assistance? Reach out via our Contact Form before shipping any items back so we can provide you with an RMA number.
Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
Verify Your Build:
If this product doesn't list your specific vehicle data, simply reach out to support@autohousesupply.com. We will manually verify compatibility for you.
Our Promise:
When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.
Questions? Send us your Year, Make, and Model via our Contact Form and we’ll get you a definitive answer so you can buy with confidence.
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Genuine parts at the industry's best prices.
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